Hottse electric



March l8 1924. 1,486,907

C. W. LOVELL IGNITION AND LIGHTING SWITCH Filed Jan. 13. 1922 DOUBLE l.WITNESSES: INVENTOR Patented Mar. 18, 1924,

UNITED STATES PATENT OFFICE.

CHARLES w. LOVELL, or \VILKINSBURG,

PENNSYLVANIA, ASSIG-NOR TO WESTING- HOUSE ELECTRIC 6% MANUFACTURINGCOMPANY, A CORPORATION OF PENNSYL- VANIA.

IGNITION AND LIGHTING SWITCH.

Application filed January 13, 1922. Serial No. 528,986.

of Wilkinsburg, in the county of Allegheny and State of Pennsylvania,have invented'a new and useful Improvement in Ignition and LightingSwitches, of which the following is a specification.

My invention relates to ignition and lighting switches such as arecommonly employed for controlling the ignition and lighting circuits ofautomobiles and other motor vehicles.

an arrangement for automatically locking switch members in predeterminedpositions upon their actuation to such positions.

A second object of my invention is to provide an arrangement whereby asingle locking mechanism may operate to lock each of a plurality ofswitch members in one or more positions, as desired.

A further object of my invention is to provide a locking mechanism for aplurality of switches whereby the. locking mechanism may be actuated tooperative position at any desired time without interfering with theoperation of the switches until they are actuated to predeterminedpositions in which it is desired to retain them.

A switch mechanism constructed in accordance with my invention comprisesbroadly an ignition and a lighting switch and a single mechanism forlocking them. The locking mechanism is so arranged that, upon itsactuation to'its operative position, the locking-boltsare yieldable incase corresponding recesses in the switch members do not register withthe bolts. In such event, the switches are automatically locked whenthey are actuated to predetermined positions.

The details of my invention will be described in connection with theaccompanying drawing, in which Figure 1 is a front elevational view of aswitch embodying my invention.

Fig. 2 is a front view, partially in elevation and partially in sectionof the switch of Fig. 1, the cover member being removed.

Fig.3 is a view in longitudinal section taken on line -III-III of Fig.1.

One object of my invention is to provide Figs. 4, 5 and 6 arerespectively side elevational, top and end views of the bolt mechanismof the lock.

My improved switch mechanism comprises a base plate 1 of suitableinsulating material, a cover member 2 of cup shape and a front platemember 3 that is inset in the cover member 2. The ignition switchcomprises a cylindrical contact drum a that is mounted upon a shaft 5provided with an operating, handle 6. The contact drum 4 coacts withstationary contact fingers 7, 8 and 9 that are suitably secured to thebase plate 1.

The lighting switch comprises a contact drum 10 mountedupon a shaft 11and controlled by an operating handle 12. Stationary contact members 13,14, 15 and 16 coact with the contact drum 10.

A. look mechanism 17 comprises the usual key barrel 18 which has securedthereto at the rear end thereof a pawl member 19 provided with anextending arm 20. The lock mechanism comprises, also, a bolt mechanism22 that is reciprocable in a groove 23 in the base plate 1. The boltmechanism comprises a casing member 24 of substan tially rectangularshape that is provided with a pin 25 for coacting with the arm 20 of thepawl 19. At each end of the casing 24 is slidably mounted a bolt 26 forcoacting with corresponding recesses 27 in disks 28 that are secured tothe respective shafts 5 and 11. V

The several notches 27 register with the corresponding bolts 26preferably when the ignition switch is in its Off position only and thelighting switch is in any of the positions designated Off, Rear and Aux.Rear. It will, of course, be understood that the switches may be lockedin any of their several positions by providing notches 27 to correspondto such positions. Each of the bolts 26 is yieldingly maintained in itsextended position by a spirng 30.

The operation of the switches during the normal operation of the vehiclein connection with which it is employed may be readily understood. Thebolt mechanism 22 normally occupies its inoperative position in whichit-is illustrated in Figs. 2 and 3. In case it is desired to lock theswitches in certain positions, the switches may actuated to suchpositions 1 no t the operation of the lock mechanism.

is turned. to a tun-(i 'l e Hey the nto the correspon cesses 27 (in lrotation of the switch (his thereby prevented.

In case hov is reason, to 1 Le ectnzlii on of the SW'llCilGS to Whic 1they to he lOOiiQ 18 is bated to ectn e th x J. iiCL slots 2'? slo whenhe then those lock them.

with ei 1-21 of the bolts the o belt, or bolts, the into the casino; Prino' 30. l l hen are actuated into sucl. L tl e note] c 27 reg st inp;bol

men

t the spring; 30 forc ing'; position, and 1" other switch is preventeor.

It Will be unclerstool'i, however, that it is not possible to actuatethe lighting switch through one of its locking positions to en otherlocking; position it the bolt .neche nisin is in operative position.

By means of this erij'sngctnent, it is unnecesssry to maintain the he inthe lock to maintain the ignition circuit in operation, as i neccs, e. vin connection witl tion switches of H18 usual type. may be removed wheni locki nisin is in either OlDCl'ZlelVQ or its inopci'z tive position./Vhen this reniovecl with the locking; nieihenisii in operativeposition, it is only necesss 5 npon leaving the vehicle. to actuate to iiition switch to its Off position. If the svitei is in its Gil position,3'; Will b loclqecl prior to the withcli'zuvsrl of If the headlights erein use the switch may he moved to the position onzrtecl Aura. Reel whichis the usual tion for park, 1,; if the lighting; 5} in use the locking;mechanism operative position to pe of the lighting switch t l The aboveend other zu'lvzintegcs arent to those familiar with the art of g motorvehicles.

clenn as my inven "on The combination Will). a movable switch members,each hevi plurality of positions, 01 (i nisi'n comprising two relativelymovable ei gaging members, saicl mechanism he ing tWo positions in oneof which the respective switch members are eutoniaticsl v oclzed upontheir actuation to predeterni ned izlomble plurality nlsm conlprisi "ityof E1180ll&- movable 4 i h members, liv ng two p sicions in one h r.Qbers are pi'ctet rinined iUC f positions 1 car-r c ions role/1 intini"-il spec/tin 3 when the lo {i position i V- 7 cup prcclrfl co pos' 4-.'lhc combine ion 'Wi nisni having more plurnlil of i'zieinl;

v biesoc m 1 one, in ms for con the position of C I inecl inisin of: sit of switch iinns having portions coactin g: respect ely With iilJ'iRSQfl members to locl; said drums when the locking mechanism is inan operative position and the respective drums occupy predetermined posiZions.

5 The combination with. a pair of rotstable ch members in substantiallythe se nc plnne each or saici members having engaging portionscorresponding to certain positions, of 1' locking mechanism comprising:2 pair of relatively movable elements fo engaging the seiol portions ofthe respecti e switch members, e member for can elements sncl means foryieldelements in engaging iclfi lively c of ro- Astenl'ielly the ALUHEShaving positions in -rn.echenism come pair 0; eleo'y s-riol movablecting with the res in substantially the 1 P216. clrnitns having; re-

eesses corresponding; to certain positions of seir rlifininsv oi": elocking: mechanism comments when the latter are in operative position.

The combination with a pair of rotatablc switch drums each having aplural ity of positions and notched portions corresponding to certain ofsaid positions, of a locking mechanism comprising a pair of elements forrespectively coacting with the switch drums to lock them in said certain positions, a member for supporting said elements and for movingthem into and out of operative positions and means 'i oi? yieldine lypermitting movement of said eiinici'its relatively to the supportingmemin case said notched portions do not 1 sister with said elements whenthe latter are actuated to their operative positions.

9. The combination with a pair of to tatable switch drums each having aplurality of positions and notched portions cor responding to the Oilposition of one of said switch drums and to the Oh? position and anoperative position of the other switch drum, of a locking mechanismoperable to automatically lock each of said switch drums in one of saidcertain positions upon their respective actuation thereto while thelooking mechanism occupies its operative position.

10. The combination with an ignition switch and a lighting switch, of alocking mechanism comprising a yieldingly supported locking element foreach of said switches, said switches being provided with notches forcoacting with said elements and corresponding to the Oil position onlyof said i gnition switch and to the Oii posi tion and an operativeposition of the light ing switch whereby each of said switches isautomatically locked in one of said positions upon their respectiveactuation thereto while said locking mechanism is in operative position.

11. The combination with a plurality of movable switch members, of alocking mechanism sherefor comprising a key-actuated member. a pluralityof members carried by said key-actuated member for coacting with saidswitch members, said coacting members being movable relatively to each oher and to said keyectuated member, and means for yieldinglyniaintaining said coacting member extended positions.

lhe combination with a plurality of movable switch members, of a lockingmechanism therefor comprising a key-actuated member, a plurality ofmembers carried by said key-actuated member for coacting with saidswitch members, said coacting r ember being: yieldin movable relativelyto each other and to said key-actuated member whereby said lockingmechanism may be actuated to locking position prior to the actuation ofsaid switch members to their respective positions in which they are tobe locked and each of said coacting members automatically engages thecorresponding switch member upon its reaching the tie sired position.

In testimony whereof I have hereunto subscribed my name this 4th day ofJanuary 1922.

CHARLES W. LOVELL.

